28400745

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 47775744

約数和(自身を除く): 19374999

約数列:

[1, 3, 5, 15, 23, 69, 115, 191, 345, 431, 573, 955, 1293, 2155, 2865, 4393, 6465, 9913, 13179, 21965, 29739, 49565, 65895, 82321, 148695, 246963, 411605, 1234815, 1893383, 5680149, 9466915, 28400745]

約数ペア:

[(1, 28400745), (3, 9466915), (5, 5680149), (15, 1893383), (23, 1234815), (69, 411605), (115, 246963), (191, 148695), (345, 82321), (431, 65895), (573, 49565), (955, 29739), (1293, 21965), (2155, 13179), (2865, 9913), (4393, 6465)]